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Common darter: Difference between revisions
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== Introduction == | == Introduction == | ||
Libellulidae is the largest family in the order. They have dark spots on the wings. [http://www.cals.ncsu.edu/course/ent425/compendium/odonata.html] | Libellulidae is the largest family in the order. They have dark spots on the wings. [http://www.cals.ncsu.edu/course/ent425/compendium/odonata.html]. The life span is short, some of them are no more than a week or two, but exceptionally are 6-8 weeks. Adults form is most active between mid-morning and mid-afternoon, when the temperatures are up to the highest. | ||
== Body Design == | == Body Design == | ||
[[File:Common darter body.jpg|thumb|180px|left|Description]] | [[File:Common darter body.jpg|thumb|180px|left|Description]] | ||
Base on order Odonata. They have three pairs of jointed appendages, exposed mouth parts, an exoskeleton, two pair of wings with many veins and cross veins, one pair of short antennae, abdomen is long and slender, and large compound eyes. The common darter has black legs with yellow streaks, which is separate it from other species. Approximately of the length is 3.8-4.3 centimeters.[http://www.scottishwildlifetrust.org.uk/visit/wildlife/c/common-darter/] The gills are located internally. | Base on order Odonata. They have three pairs of jointed appendages, exposed mouth parts, an exoskeleton, two pair of wings with many veins and cross veins, one pair of short antennae, abdomen is long and slender, and large compound eyes. The common darter has black legs with yellow streaks, which is separate it from other species. Approximately of the length is 3.8-4.3 centimeters.[http://www.scottishwildlifetrust.org.uk/visit/wildlife/c/common-darter/] The gills are located internally. The compound eyes of some dragonflies have up to 28,000 facets. Females will mate only with males that hold a territory. | ||
== Life Cycle == | == Life Cycle == | ||
Most of the life of the dragonflies are spending their life in larval form, beneath the water surface, using internal gills to breathe, and using extendable jaws to catch other invertebrates. The larvae of large dragonflies may live up to five years. | |||
== Ecology == | == Ecology == | ||
[[File:example.jpg|thumb|150px|left|Description]] | [[File:example.jpg|thumb|150px|left|Description]] | ||
For human, they added to the wonder of nature. They feed on large numbers of small flying insects. They catch and eat honey bees. | For human, they added to the wonder of nature. They feed on large numbers of small flying insects. They catch and eat honey bees. They used as medicine in Japan and China and also was a food source, eaten as adults or larvae. | ||
== Habitat == | == Habitat == | ||
They used a wide range of still water including ponds, lakes, pools, calm waters of slow flowing rivers. They also are able to colonies brackish waters. The larvae are often found along the bottom of a water-body or in aquatic vegetation close to the surface. They mostly live in Europe especially United Kingdom, and South Korea [http://eol.org/pages/2867623/maps] | They used a wide range of still water including ponds, lakes, pools, calm waters of slow flowing rivers. They also are able to colonies brackish waters. The larvae are often found along the bottom of a water-body or in aquatic vegetation close to the surface. They mostly live in Europe especially United Kingdom, and South Korea [http://eol.org/pages/2867623/maps] | ||
== Reproduction == | == Reproduction == | ||
